.htaccess
.htaccess (Hypertext Access) is a configuration file used on Apache web servers to control directory-level settings, such as URL redirection, access control, and performance optimizations. It allows developers to override global server configurations for specific directories without modifying the main server configuration files. This file is commonly used for tasks like enabling HTTPS, blocking IP addresses, or setting custom error pages.
Developers should learn .htaccess when working with Apache-based hosting environments, such as shared hosting or self-managed servers, to implement security measures, SEO-friendly URLs, or site-specific rules. It is essential for tasks like redirecting HTTP to HTTPS, preventing directory listing, or configuring caching headers to improve website performance and security.